M1A NM Front Sight query


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Bevobud76
November 30, 2008, 10:37 AM
Are the NM front sights for the M1As adjustable?

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H2O MAN
November 30, 2008, 10:44 AM
You can move them side-to-side.

lencac
November 30, 2008, 11:04 AM
The answer to your question is yes. I have included a photo of mine to illustrate. The way it is done is you center the rear sight windage adjustment so the index mark on the rear sight is lined up with the center index mark on the receiver. Then you zero the the rifle at 100 yrds. off the bench using the front sight adjustment and BINGO, you're there. After that as long as the front sight doesn't get moved no matter how far you adjust the rear for windage all you need to do is set the rear sight back to the center indexing marks and you are zero again. ;)

SlamFire1
November 30, 2008, 04:23 PM
The "NM" front sights are a carry over when the Army used the 5V target. The 5V target was "the" target used when they had the M1903 Springfield. It was designed in tandem to the razor blade thin 03 front sight. They are about equal width's at distance.

This target bull, just about equal in size to a 200 NRA Bull, was used at 200 yards and 300 yards.

At 300 yards the 5V looks like a pin point. To call it a pin head would magnify the size; rather it is a tiny dot. The 600 yard 5V target is equally hard to see.

These "NM" front sights were made extremely thin, because the standard post is too wide to use on the 5V target. I know because I have shot the 5V target. Trying to center that pin head on what looks to be a ten foot long plank, just does not work well.

However since the 5V went away 40 + plus years ago, most competitors used the widest GI post they could find. The wider post worked better with the NRA bulls. All you could do with the "NM" post was a six OC hold. And it was not a good sight picture because the "NM" post sight picture looks like a human hair under an enormous circle.

I left my NM posts in my parts boxes, and have been better by leaving them there.

Don't waste your money on a NM post.

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